So Shawn Maldonado uses both hands in his backswing, but he puts his thumb in the ball. If your complaint is that a two hand on ball approach is an advantage due to rev rate and not putting their thumb in the ball, what are you going to bitch about with Shawn? What about the player that can use one hand but doesn't put his thumb in? Niether player fits the definition of "classic" bowling style, but both use a modified, powerful style to generate a potential advantage. And if it is such a big advantage, why has Robert Smith gone back to a conventional grip to drop revs?